A method and system for notifying users of a mail system that a mail piece has been quarantined is provided. A plurality of incoming mail mailboxes each include a sampler to sample air from a letter that is tested using a first sensor. Source information corresponding to hazard flagged mail pieces and...http://www.google.de/patents/US20030115161?utm_source=gb-gplus-sharePatent US20030115161 - Method and system for notifying mail users of mail piece contamination
